Table 3.

Estimated class prevalences at each wave and conditional response probabilities from three-step latent transition analysis (unweighted N = 11996)

		Class 1 – Nonusers	Class 2 – Ever Users of Cigarettes and E-cigarettes	Class 3 – Current Polytobacco Users
Wave 1 Prevalence		86% (N=10275)	11% (N=1263)	4% (N=458)
Wave 2 Prevalence		78% (N=9409)	14% (N=1705)	7% (N=882)
Cigarette	Never	0.98	0.36	0.08
	Non-current use	0.02	0.51	0.20
	Current	0.00	0.14	0.71
E-cigarette	Never	0.97	0.44	0.14
	Non-current use	0.02	0.45	0.39
	Current	0.01	0.12	0.48
Cigar	Never	0.99	0.66	0.22
	Non-current use	0.01	0.27	0.32
	Current	0.00	0.07	0.46
Hookah	Never	0.98	0.64	0.43
	Non-current use	0.02	0.29	0.32
	Current	0.01	0.07	0.25
Smokeless tobacco	Never	0.99	0.83	0.60
	Non-current use	0.01	0.13	0.21
	Current	0.00	0.04	0.19

Conditional response probabilities for use of cigarette, e-cigarette, cigar, hookah and smokeless tobacco are shown for the three classes that were identified during Step 1 of the latent transition analysis. Note. Missing data for each product at each wave was as follows. Wave 1: Cigarette (weighted % = 0.2%; unweighted N = 30); E-cigarette (weighted % = 0.5%; unweighted N = 66); Cigar (weighted % = 2.8%; unweighted N = 332); Hookah (weighted % = 0.2%; unweighted N = 29); Smokeless tobacco (weighted % = 1.3%; unweighted N = 156); Wave 2: Cigarette (weighted % = 0.8%; unweighted N = 101); E-cigarette (weighted % = 3.4%; unweighted N = 418); Cigar (weighted % = 4.4%; unweighted N = 536); Hookah (weighted % = 0.9%; unweighted N = 117); Smokeless tobacco (weighted % = 3.0 %; unweighted N = 372).